METHOD FOR DEVELOPMENT OF DEPOSIT WITH HIGH-VISCOSITY OIL Russian patent published in 1998 - IPC

FIELD: oil production industry. SUBSTANCE: according to method, heat-carrying agent is injected into injection wells drilled from ground surface. Oil is recovered through producing wells drilled from underground working. This underground working is driven in productive oil bed or below it. Producing wells are drilled as slightly inclined. They are arranged in rows. Injection wells are drilled close to boundary of section of deposit being developed between rows of producing wells. Drilled in intervals between aforesaid wells and parallel to them are slightly-rising wells. Bottom holes of these wells are oriented to roof of oil bed, they are crossing injection wells or passing in zone of their influence and create single injection system for injection of heat-carrying agent into oil bed. This ensures higher intensity of oil recovery, increased oil output and reduction of specific heat consumption per unit of oil extracted. EFFECT: higher efficiency. 2 cl, 2 dwg